NAME¶
get_x_rotate_quat, get_y_rotate_quat, get_z_rotate_quat - Construct axis
rotation quaternions. Allegro game programming library.
SYNOPSIS¶
#include <allegro.h>
void get_x_rotate_quat(QUAT *q, float r);
void get_y_rotate_quat(QUAT *q, float r);
void get_z_rotate_quat(QUAT *q, float r);
DESCRIPTION¶
Construct axis rotation quaternions, storing them in q. When applied to a point,
these quaternions will rotate it about the relevant axis by the specified
angle (given in binary, 256 degrees to a circle format).